package string;

public class StringDemo {
    public static void main(String[] args) {
        String s1="123abc";
        String s2="123"+"abc";
        System.out.println(s1==s2);

        String s3="123";
        String s4=s3+"abc";
        System.out.println(s1==s4);
        System.out.println(s4);
        System.out.println(s1.equals(s4));
    }
}
